WO2010109569A1 - コネクタ接続構造及びこれを用いたヘッドランプ用光源の点灯装置 - Google Patents
コネクタ接続構造及びこれを用いたヘッドランプ用光源の点灯装置 Download PDFInfo
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- WO2010109569A1 WO2010109569A1 PCT/JP2009/006977 JP2009006977W WO2010109569A1 WO 2010109569 A1 WO2010109569 A1 WO 2010109569A1 JP 2009006977 W JP2009006977 W JP 2009006977W WO 2010109569 A1 WO2010109569 A1 WO 2010109569A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/50—Fixed connections
- H01R12/51—Fixed connections for rigid printed circuits or like structures
- H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
- H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/22—Contacts for co-operating by abutting
- H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
- H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
- H01R13/2421—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using coil springs
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/325—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by abutting or pinching, i.e. without alloying process; mechanical auxiliary parts therefor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10295—Metallic connector elements partly mounted in a hole of the PCB
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
- H05K2201/10742—Details of leads
- H05K2201/1075—Shape details
- H05K2201/10757—Bent leads
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
- H05K2201/10742—Details of leads
- H05K2201/1075—Shape details
- H05K2201/10818—Flat leads
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
- H05K2201/10742—Details of leads
- H05K2201/1075—Shape details
- H05K2201/10818—Flat leads
- H05K2201/10825—Distorted or twisted flat leads, i.e. deformed by torque
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
- H05K2201/10742—Details of leads
- H05K2201/1075—Shape details
- H05K2201/10856—Divided leads, e.g. by slot in length direction of lead, or by branching of the lead
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/04—Soldering or other types of metallurgic bonding
- H05K2203/044—Solder dip coating, i.e. coating printed conductors, e.g. pads by dipping in molten solder or by wave soldering
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/24—Reinforcing the conductive pattern
- H05K3/245—Reinforcing conductive patterns made by printing techniques or by other techniques for applying conductive pastes, inks or powders; Reinforcing other conductive patterns by such techniques
- H05K3/247—Finish coating of conductors by using conductive pastes, inks or powders
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/306—Lead-in-hole components, e.g. affixing or retention before soldering, spacing means
- H05K3/308—Adaptations of leads
Definitions
- the present invention relates to a connector connection structure for connecting a connector to a substrate of an electric device and a lighting device for a light source for an in-vehicle headlamp using the same.
- connection means that does not use solder is employed.
- Patent Document 1 As a conventional technique for connecting connector terminals without using solder, for example, a metal elastic terminal disclosed in Patent Document 1 can be cited.
- This terminal is a press-fit terminal that is connected by being inserted into a through hole of the substrate.
- Patent Document 2 discloses a connector that is attached by passing a terminal through a terminal holding portion of a connector housing on a board, and elastically pushes the terminal on the board side of the connector against the electrode surface on the board. By applying this, the electrical connection is stabilized.
- the printed circuit board connection terminal disclosed in Patent Document 3 is a terminal for connecting the tab terminal and the printed circuit board, and is electrically connected by being elastically pressed against the electrode surface on the printed circuit board.
- the electrode connection part is provided.
- Patent Document 4 discloses a board through-hole connection connector in which an insertion portion provided in a terminal is fitted and fixed by elasticity when inserted into a through-hole of a board.
- Patent Document 5 discloses a press-fit terminal device provided with an arm portion that is in contact with an electrode surface on the substrate and is electrically connected to a press-fit terminal that is inserted into and connected to a through-hole of the substrate. Is disclosed.
- the rust preventive flux layer provided on the electrode surface is broken with a strong pressure such as press fit, and the electrode
- a method of bringing a terminal into contact with the copper surface is used, or a means for suppressing oxidation of the contact electrode surface of the substrate is taken in order to avoid contact failure.
- the electrode on the board is actively used as a connector terminal by covering the contact part of the board with gold plating, nickel plating, tin plating or the like to suppress oxidation of the contact electrode surface. Further, it is necessary to add a substrate processing by a plating process different from a normal substrate manufacturing process. However, in this case, the influence of the potential gradient between metals cannot be ignored. Therefore, in order to suppress corrosion or oxidation due to electrolytic corrosion and make it difficult for contact failure to occur, the surface metal of the connector terminals that contact each other is made the same as the metal used for the substrate electrode to ensure the reliability of connector connection There are many examples.
- the present invention has been made to solve the above-described problems.
- the contact portion of the connector terminal is tin-plated and has a spring property, and is pressed into contact with the electrode surface on the hot-plated substrate. It is an object of the present invention to provide a connector connection structure that can ensure long-term contact reliability by being electrically connected and a lighting device for a light source for an in-vehicle headlamp using the same.
- the electrode of the substrate includes a tin-plated surface formed by hot-dip tin plating on the surface
- the connector terminal includes a movable portion having a spring property provided with a tin-plated contact portion, and the movable portion The contact portion is pressed against the tin-plated surface due to the spring property, and the connector terminal and the electrode surface of the substrate are electrically connected.
- a tin-plated surface formed by hot-tin plating is provided on the electrode surface of the substrate, and the contact portion is pressed against the tin-plated surface by the spring property of the movable portion having the tin-plated contact portion provided on the connector terminal. Then, the connector terminal and the electrode of the board are electrically connected.
- lead-free solder is used, and the harder tin-plated surface is used as the contact surface between the connector terminal and the substrate electrode, so that the long-term contact reliability can be ensured compared to the conventional case. There is.
- the contact portion of the connector terminal with the substrate electrode is also tin-plated, corrosion and oxidation due to electrolytic corrosion are suppressed, and contact failure is unlikely to occur, and the reliability of connector connection can be improved. Furthermore, the contact part is pressed against the tin-plated surface by the spring property of the movable part, and the connector terminal and the electrode of the board are electrically connected. Therefore, connection by a simple pressing operation is possible, and soldering of the connector terminal Can be omitted, and workability can be improved. In addition, it is convenient also about the environmental problem in recent years to use the solder which has tin which does not contain lead as a main component, as a material of hot-dip tin plating.
- FIG. 5 is a diagram showing a configuration example 1 of a connector terminal according to Embodiment 1.
- FIG. 6 is a diagram showing a configuration example 2 of a connector terminal according to Embodiment 1.
- FIG. 6 is a diagram illustrating a configuration example 3 of a connector terminal according to Embodiment 1.
- FIG. 6 is a diagram showing a configuration example 4 of a connector terminal according to Embodiment 1.
- FIG. It is a block diagram which shows roughly the structure of the lighting device by Embodiment 2 of this invention. It is sectional drawing which shows the lighting control part in FIG. 6 roughly.
- FIG. 1 is a view showing a connector connection structure according to Embodiment 1 of the present invention, and shows a cross section obtained by cutting a substrate 4 and connector terminals 1 in a vertical direction.
- the connector terminal 1 includes the insertion portion 2a and the movable portion 2b. From the state shown in FIG. 1A, the insertion portion 2a extends in the direction of the white arrow shown in FIG. Is inserted into the hole (through hole) 5 of the substrate 4, whereby the contact portion 3 of the movable portion 2 b and the tin-plated surface 7 of the electrode 6 on the substrate 4 are electrically connected.
- the movable portion 2 b of the connector terminal 1 is provided so as to project obliquely with respect to the insertion direction of the insertion portion 2 a into the hole 5, and bends according to the operation of inserting the insertion portion 2 a into the hole 5 of the substrate 4. Has springiness. Further, in the example shown in FIG. 1, the bent vertex (sharp edge portion on the substrate 4 side) obtained by bending the end portion of the movable portion 2 b is used as the contact portion 3. Furthermore, tin plating is applied to a portion including at least the contact portion 3 of the movable portion 2b.
- the contact part 3 is provided by bending the end part of the movable part 2b, the edge part of the end surface of the plate-like part that becomes the movable part 2b is also used as the contact part 3 without bending the end part of the movable part 2b. Good.
- the electrode 6 provided on the substrate 4 is made of a copper foil, and tin plating is applied on the surface thereof.
- the tin plating applied to the electrode 6 is performed, for example, by melting and applying a lead-free solder containing tin as a main component.
- a method for hot-tin plating reflow solder that is applied with a cream solder mainly composed of tin on the surface of the electrode 6 and applied to a reflow furnace is used, or a flow solder that immerses the surface of the substrate 4 in the molten solder is used. .
- the hot tin plating process can be performed in the process of soldering the electronic component to be mounted, and the plating process of the substrate 4 alone can be reduced, so that the price of the substrate 4 can be reduced.
- the insertion portion 2 a of the connector terminal 1 When connecting the connector terminal 1 to the substrate 4, the insertion portion 2 a of the connector terminal 1 is disposed in the hole 5 of the substrate 4 and the contact portion 3 of the movable portion 2 b is connected to the substrate 4 as shown in FIG. Arranged on the electrode 6. Thereafter, as shown in FIG. 1B, when the insertion portion 2 a is inserted into the hole portion 5, the contact portion 3 is pressed against the flux layer 8 formed on the tin plating surface 7. Thereafter, the insertion portion 2a is further inserted to bend the movable portion 2b, and the contact portion 3 is displaced in the black arrow direction (surface direction of the substrate 4) shown in FIG. 1B due to the deformation caused by the bending of the movable portion 2b. (Slide). At this time, the flux layer 8 is wiped (wiped) by the contact portion 3, and the tin-plated surface 7 and the contact portion 3 come into contact with each other to be electrically connected.
- the contact portion 3 of the connector terminal 1 is supported by the spring-like movable portion 2b, and the contact portion 3 plated with the spring property of the movable portion 2b is used as the tin-plated surface of the electrode 6 surface. 7 is pressed to be electrically connected. Thereby, the soldering operation
- the connector terminal 1 is provided with the insertion portion 2 a, and the insertion portion 2 a is inserted into the hole 5 of the substrate 4 to press the contact portion 3 toward the electrode 6 of the substrate 4.
- the contact portion 3 may be simply pressed against the substrate 4 and electrically connected to the tin plating surface 7 without providing the insertion portion 2a.
- the force of pressing the contact portion 3 against the substrate 4 is brought into contact within a range where the rigidity of the substrate 4 and the housing case (not shown) of the electric device that fixes the substrate 4 is allowed.
- the pressing force is reduced due to the bending of the substrate 4 or the distortion of the housing case.
- FIG. 2 is a diagram showing a configuration example 1 of the connector terminal according to the first embodiment, and shows a cross section of the substrate 4 cut in the vertical direction.
- the description of the electrode 6, the tin plating surface 7, and the flux layer 8 on the substrate 4 is omitted for simplicity of the following description.
- the connector terminal 1A shown in FIG. 2 one end of a tin-plated plate-like member is vertically cut into three strips, the central portion serves as an insertion portion 2a, and the portions on both sides (plate-like)
- the movable portion 2b is formed by bending the portion) in a staggered direction so as to project obliquely with respect to the insertion portion 2a.
- FIG. 2 is a diagram showing a configuration example 1 of the connector terminal according to the first embodiment, and shows a cross section of the substrate 4 cut in the vertical direction.
- the description of the electrode 6, the tin plating surface 7, and the flux layer 8 on the substrate 4 is omitted for simplicity of the following description.
- these movable portions 2 b are bent at their ends so that the bent apex (sharp edge portion on the substrate 4 side) becomes the contact portion 3.
- part used as the movable part 2b as the contact part 3, without bending the edge part of the movable part 2b.
- the insertion portion 2a is inserted into the hole portion 5 of the substrate 4, and when the tin-plated surface 7 of the substrate 4 and the contact portion 3 come into contact with each other as in FIG.
- the distal end portion of the insertion portion 2a that passes through the substrate 4 is bent toward the back surface side of the substrate 4 as shown in FIG.
- the bent portion 2c formed by this bending comes into contact with the substrate 4, thereby resisting the force acting in the direction in which the insertion portion 2a comes out of the hole portion 5 due to the spring property of the movable portion 2b, and the contact portion with the tin-plated surface 7
- the connector terminal 1 ⁇ / b> A is fixed to the substrate 4 in a state in which the contact terminal 3 is pressed.
- the terminal 1A since the connector terminal 1A is fixed by the bent portion 2c formed at the distal end portion of the insertion portion 2a, the terminal itself supports the movable portion 2b, which is a spring member of the connector terminal 1A.
- the contact portion 3 can be stably pressed against the tin plating surface 7 of the substrate 4. Thereby, the stable press can be ensured and the reliability of connection of the connector terminal 1A can be improved.
- the distal end portion of the insertion portion 2a is fixed by being bent, soldering work is not necessary, and secure fixing can be performed by simple work, thereby improving workability.
- a plurality of movable portions 2b are provided by cutting and raising the plate-like portion from the connector terminal 1A, the plurality of contact portions 3 can be brought into contact with the tin-plated surface 7 of the electrode 6 of the substrate 4, and the tin-plated surface 7
- the contact area is increased, the contact resistance is reduced, and heat generation due to the current supplied to the connector terminal 1A can be reduced. In other words, the current that can be passed through the connector terminal 1A can be increased.
- the movable part 2b is formed by cutting and raising the plate-like member, the number of parts used in the present invention does not increase.
- FIG. 3 is a diagram showing a configuration example 2 of the connector terminal according to the first embodiment, and shows a cross section of the substrate 4 cut in the vertical direction. Also in FIG. 3, like FIG. 2, the description of the electrode 6, the tin plating surface 7 and the flux layer 8 on the substrate 4 is omitted.
- the movable part 9 is comprised from the plate-shaped member provided separately from the insertion part 2a.
- the movable portion 9 is a leaf spring having a bent central portion in the longitudinal direction of the plate member, and an insertion hole for inserting the insertion portion 2a is provided in the central portion.
- both ends in the longitudinal direction of the plate-like member that becomes the movable portion 9 are bent in the opposite direction to the center portion, and each bending vertex (a sharp edge portion on the substrate 4 side) is contacted. 9a.
- the edge part of the end surface of a plate-shaped member is good also as the contact part 9a instead of bending the both ends of a plate-shaped member and providing the contact part 9a.
- a cut is made at the tip of the insertion portion 2a, and a part of the tip is cut along the cut to form a claw portion 2d projecting obliquely with respect to the insertion direction of the insertion portion 2a.
- the diameter of the insertion hole provided in the movable part 9 is large enough to insert the insertion part 2a, but is narrower than the width of the terminal body part to which the insertion part 2a is connected. For this reason, when the insertion portion 2 a is inserted into the insertion portion 2 a through the insertion portion 2 a into the hole portion 5 of the substrate 4, the terminal main body portion comes into contact with the movable portion 9 and the leaf spring is pressed by the movable portion 9. Due to the spring property of this leaf spring, when the tin-plated surface 7 and the contact portion 9a are in contact with each other as in FIG. 1 (b), the distal end portion of the insertion portion 2a passing through the substrate 4 through the hole portion 5 As shown in FIG.
- the connector terminal 1 ⁇ / b> B is fixed to the substrate 4 in a state where and are pressed.
- the movable portion 9 having a simple configuration can be formed by using a separately provided leaf spring in the connector terminal 1B. Further, since the claw portion 2d formed at the distal end of the insertion portion 2a prevents the insertion portion 2a from being pushed into the hole portion 5 of the substrate 4, and the connector terminal 1B is attached to the substrate 4 by a simple operation of cutting the penetrating distal end portion. It becomes possible to fix, soldering work is omitted, and workability is improved.
- FIG. 4 is a diagram showing a configuration example 3 of the connector terminal according to the first embodiment, and FIG. 4A shows a cross section obtained by cutting the substrate 4 in the longitudinal direction and the connector terminal 1C, and FIG. ) Is a vertical cross section of the movable portion 10, and FIG. 4C shows a view seen from the direction of the arrow in FIG. 4, the description of the electrode 6, the tin plating surface 7 and the flux layer 8 on the substrate 4 is omitted as in FIG.
- the movable portion 10 is configured by a dish-like member provided separately from the insertion portion 2a.
- a disk spring is used that generates springiness when pressed in the direction of the arrow shown in FIG.
- the circumference part 10a which is the bending vertex which bent the outer periphery of the disk spring upward be a contact part.
- an insertion hole 10b for penetrating the insertion portion 2a is provided in the central portion of the disc spring serving as the movable portion 10.
- the diameter of the insertion hole 10b is large enough to insert the insertion part 2a, but is narrower than the width of the terminal body part to which the insertion part 2a is connected. For this reason, when the insertion part 2a is inserted into the insertion hole 10b of the movable part 10 through the insertion part 2a into the hole part 5 of the substrate 4, the terminal main body part comes into contact with the disc spring, and the disc spring is pressed in the direction of the arrow shown in FIG. The As a result, bending occurs such that the disc spring expands from the central portion toward the outer peripheral direction, and the circumferential portion 10 a slides in the surface direction of the substrate 4 to wipe the flux layer 8.
- a cut is made at the tip of the insertion portion 2a, and a part of the tip is twisted and bent along the cut to form the twist portion 2e.
- a constricted portion 2e1 may be formed in a portion where a cut is provided.
- the connector terminal 1C is inserted into the insertion hole 10b of the movable part 10 through the insertion part 2a into the hole part 5 of the substrate 4, and is wiped in the same manner as in FIG.
- the distal end of the insertion portion 2a that has penetrated the substrate 4 through the hole 5 is shown in FIGS. 4 (a) and 4 (c) with the insertion direction as an axis at the cut portion. Twist and bend.
- the twisted portion 2e formed by this bending comes into contact with the substrate 4 as shown in FIG. 4C, thereby resisting the force acting in the direction in which the insertion portion 2a comes out of the hole 5 due to the spring property of the movable portion 10.
- the connector terminal 1 ⁇ / b> C is fixed to the substrate 4 in a state where the tin plating surface 7 and the circumferential portion 10 a are pressed and contacted.
- the movable portion 10 having a simple configuration can be formed by using a disc spring in the connector terminal 1C. Further, since the twisted portion 2e formed at the distal end of the insertion portion 2a is prevented from coming off, the connector terminal 1C can be connected to the substrate 4 by a simple operation of pushing the insertion portion 2a into the hole 5 of the substrate 4 and twisting the penetrating distal end portion. It is possible to fix to the solder, the soldering work is omitted, and the workability is improved.
- FIG. 5A and 5B are diagrams showing a configuration example 4 of the connector terminal according to the first embodiment.
- FIG. 5A shows a cross section of the substrate 4 cut in the vertical direction
- FIG. 5C is a perspective view showing a clip as a fixing member.
- description of the electrode 6, the tin plating surface 7, and the flux layer 8 on the substrate 4 is omitted.
- the connector terminal 1 ⁇ / b> D uses a coil spring provided separately from the insertion portion 2 a as the movable portion 11.
- the coil spring that becomes the movable portion 11 is one in which a part of the cross-sectional circle of the contact portion of the coil has an edge shape, and this edge portion 11a is used as the contact portion.
- a polygonal column (for example, a quadrangular column) wire is used, and the corner is a coil spring directed in the axial direction of the winding, so that the wire corner of the end of the coil spring is The edge can also be used as a contact portion.
- the diameter of the coil spring is large enough to insert the insertion part 2a, but is narrower than the width of the terminal body part to which the insertion part 2a is connected. For this reason, when the coil spring is inserted into the hole 5 of the substrate 4 through the insertion portion 2a, the terminal main body abuts against the coil spring, and the coil spring is pressed as shown in FIG. Thereby, the edge part 11a of a coil spring twists in the surface direction of the board
- This connector terminal 1D is inserted into the coil spring of the movable portion 11 through the insertion portion 2a and into the hole portion 5 of the substrate 4, and is wiped in the same manner as in FIG. 5 (a) and 5 (c) is fitted into the clip (prevention member) 12 shown in FIG. 5 (a) and the distal end portion of the insertion portion 2a that penetrates the substrate 4 through the hole 5.
- locking part 13 of the clip 12 latches the insertion part 2a.
- the clip 12 abuts against the substrate 4 as shown in FIG.
- the connector terminal 1 ⁇ / b> D is fixed to the substrate 4 in a state of being pressed and contacted.
- the movable portion 11 having a simple configuration can be formed by using the coil spring in the connector terminal 1D. Further, since the clip 12 fitted to the distal end of the insertion portion 2a is used for retaining, the connector terminal 1D can be simply attached by pushing the insertion portion 2a into the hole 5 of the substrate 4 and attaching the clip 12 to the penetrated distal end portion. Can be fixed to the substrate 4, soldering work is omitted, and workability is improved.
- the connector terminals used in the connector connection structure according to the present invention are not limited to the configurations shown in FIGS. 1 to 5, but the connector terminal insertion portion, the movable portion, and the disconnection described in FIGS. You may use what combined the structure for a stop suitably.
- the bent portion 2c in the configuration of FIG. 2 may be replaced with any one of the claw portion 2d in FIG. 3, the twist portion 2e in FIG. 4, and the clip 12 in FIG.
- the contact portion of the connector terminal 1 is tin-plated and has a spring property, and this contact portion is formed on the tin-plated surface 7 formed on the electrode 6 of the substrate 4. Press contact and make electrical connection.
- the contact reliability for a long time compared to the conventional case is improved. It can be secured.
- the contact portion 3 of the connector terminal 1 is also tin-plated, corrosion and oxidation due to electrolytic corrosion are suppressed and contact failure is unlikely to occur, and the reliability of connector connection can be improved.
- the contact part is pressed against the tin-plated surface by the spring property of the movable part to electrically connect the connector terminal and the electrode of the board, it can be connected by a simple pressing operation, and the soldering work of the connector terminal can be performed. It can be omitted and workability can be improved.
- the connector terminal 1 is provided with the insertion portion 2a for insertion into the hole 5 of the substrate 4, and the insertion portion 2a penetrating the substrate 4 through the hole 5 is prevented from coming off. Since the retaining portion is provided, the terminal itself supports the movable portion of the connector terminal 1, and the contact portion of the terminal can be reliably and firmly pressed against the electrode 6 of the substrate 4. Thereby, the stable press can be ensured and the reliability of the connection of the connector terminal 1 can be improved.
- Embodiment 2 the connector connection structure shown in the first embodiment is applied to at least one of a power input connection portion and a light source output connection portion in a lighting device for lighting a vehicle-mounted headlamp light source. State.
- FIG. 6 is a block diagram schematically showing a configuration of a lighting device according to Embodiment 2 of the present invention.
- the lighting device according to the second embodiment includes a discharge lamp 14, an igniter (IGN) 15, and a lighting control unit 16.
- the igniter 15 uses the igniter power supply voltage input from the lighting control unit 16 to start discharge of the discharge lamp 14.
- the lighting control unit 16 is a unit that inputs power and outputs light source power for lighting the discharge lamp 14, and includes a DC / DC converter 17, a DC / AC inverter 18, and a control unit 19.
- the DC / DC converter 17 generates a DC voltage for the light source and a power supply voltage for the igniter from the DC voltage of the power supply.
- the DC / AC inverter 18 is, for example, an H-bridge type (H / B) inverter in which two pairs of switching elements are connected in an H shape.
- the DC / AC inverter 18 receives the direct-current voltage obtained by the DC / DC converter 17 and is an alternating current for a light source. Output as voltage.
- the control unit 19 controls driving of the DC / DC converter 17 and the DC / AC inverter 18.
- the lighting control unit 16 is connected to the outside by connecting two conductors to the power source (power input connection unit) and three output conductors (including an igniter power source connection unit). Connection part).
- the connector terminal used in the connector connection structure according to the first embodiment needs to have a shape that presses the contact portion against the substrate 4, the size of the connector terminal is larger than that of a connector that is simply soldered and connected. However, this is not a problem with devices such as the lighting control unit 16 shown in FIG. 6 that have few conductors to be connected with connector terminals, or devices that allow a relatively large space occupied by the connector connection structure.
- FIG. 7 is a cross-sectional view schematically showing the lighting control unit in FIG. 6, and shows a configuration to which the connector connection structure according to the first embodiment is applied.
- the housing case of the lighting control unit 16 needs to have a waterproof structure, the board on which the configuration shown in FIG. 6 is mounted after the connector terminal 1 is attached via the waterproof power supply connector 20. 4 is inserted into the housing case and fixed.
- the connector terminal 1 according to the first embodiment can be preferably used because it can be fixed while pulling the insertion portion 2a penetrating the substrate 4, and it is not necessary to apply high pressure.
- the connector terminal 1 can be preferably used because it can be fixed while pulling the insertion portion 2a penetrating the substrate 4, and it is not necessary to apply high pressure.
- the connector terminal according to the first embodiment can be preferably used because it can be fixed while pulling the insertion portion 2a penetrating the substrate 4, and it is not necessary to apply high pressure.
- at least one of the power input connection portion and the light source output connection portion of the lighting control portion 16 is subjected to molten tin plating on the electrode surface of the substrate 4, and the connector terminal according to the first embodiment. 1 (or any one of the connector terminals 1A to 1D).
- the connector connection structure shown in the first embodiment is used for the power input connection portion and the light source output connection portion in the lighting device for lighting the in-vehicle headlamp light source. Since it is applied to at least one of them, the power input connecting portion and the light source output connecting portion can be reliably connected by a simple operation.
- the lighting device that turns on the discharge lamp has been described as an example.
- the power input connection portion or the light source output is used. Since the configuration of the connecting portion is almost the same, the same effect can be obtained.
- the connector connection structure according to the present invention has an effect of ensuring long-term contact reliability, it is suitable for use in a lighting device for an in-vehicle headlamp light source using the connection structure.
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Abstract
Description
また、特許文献2には、基板上のコネクタハウジングの端子保持部に端子を貫通させて取り付けるコネクタが開示されており、コネクタの基板側の端子を基板上の電極面に対して弾性的に押し当てることで、電気的接続の安定化を図っている。
特許文献3に開示されるプリント基板用接続端子は、タブ端子とプリント基板との間を接続する端子であり、プリント基板上の電極面に対して弾性的に押し当てられることで電気的に接続される電極接続部を備える。
特許文献4には、基板のスルーホールに挿入すると、弾性により端子に設けた挿入部が嵌合固定される基板スルーホール接続用コネクタが開示されている。
さらに、特許文献5には、基板のスルーホールに挿入して接続するプレスフィット端子に対して、当該基板上の電極面と接触して電気的に接続される腕部を設けたプレスフィット端子装置が開示されている。
ただし、この場合は、金属間の電位勾配の影響が無視できない。そこで、電食による腐食あるいは酸化を抑制して接触不良を発生しにくくするために、対向して接触するコネクタ端子の表面金属を基板電極に使用する金属と同一にしてコネクタ接続の信頼性を確保している例が多い。
このような製造工程の増加は、工作性の難易度を増すこととなり、製造コストの上昇も避けられない。
特に、これまでの半田付けで主流であった鉛を主成分とする半田では、半田表面の酸化による接触不良が避けられない。また、鉛は柔らかく、常時押圧されると接触部位が変形して押圧する力が減少するため、適切な接触圧力を長時間維持することができない。
このように、鉛が主成分の半田を接触部位に使用すると、長時間の接触信頼性が確保できないため、近年では高い信頼性を要求される機器において、鉛は接点に用いられなくなっている。
また、コネクタ端子の基板電極との接触部にも錫メッキを施したので、電食による腐食や酸化が抑制されて接触不良が発生しにくくなり、コネクタ接続の信頼性を向上させることができる。
さらに、可動部のばね性により接触部を錫メッキ面に押圧してコネクタ端子と基板の電極とを電気的に接続することから、簡単な押圧操作による接続が可能で、コネクタ端子の半田付け作業を省略でき、工作性を向上させることができる。
なお、鉛を含まない錫を主成分とする半田を溶融錫メッキの材料とすることは、近年の環境問題に関しても好都合である。
実施の形態1.
図1は、この発明の実施の形態1によるコネクタ接続構造を示す図であり、基板4及びコネクタ端子1を縦方向に切った断面を示している。実施の形態1によるコネクタ接続構造では、コネクタ端子1が挿入部2a及び可動部2bを備えており、図1(a)に示す状態から、図1(b)に示す白矢印方向に挿入部2aを、基板4の孔部(貫通孔)5に挿入することで、可動部2bの接触部3と基板4上の電極6の錫メッキ面7とが電気的に接続される。
さらに、挿入部2aの先端には切れ目を入れておき、この切れ目に沿って先端の一部を切り起こすことで、挿入部2aの挿入方向に対し斜めに張り出す爪部2dが形成される。
この実施の形態2では、上記実施の形態1で示したコネクタ接続構造を、車載ヘッドランプ用光源を点灯する点灯装置における電源入力用接続部及び光源用出力接続部の少なくとも一方に適用した構成について述べる。
これに対し、上記実施の形態1によるコネクタ端子1は、基板4を貫通した挿入部2aを引っ張りながら固定することができ、高い圧力を加える必要がないため、好適に使用することができる。例えば、図7に示すように、点灯制御部16の電源入力用接続部及び光源用出力接続部の少なくとも一方において、基板4の電極面に溶融錫メッキを施し、上記実施の形態1によるコネクタ端子1(若しくはコネクタ端子1A~1Dのいずれか)で接続する。
Claims (14)
- コネクタ端子を基板の電極面に電気的に接続するコネクタ接続構造であって、
前記基板の電極面の表面には溶融錫メッキ面を備え、
前記コネクタ端子は、錫メッキした接触部を設けたばね性を有する可動部を備え、
前記可動部のばね性により前記接触部を前記基板の電極面に押圧する構成であることを特徴とするコネクタ接続構造。 - 溶融錫メッキは、錫が主成分の無鉛半田を基板の電極面に溶融塗布して形成したことを特徴とする請求項1記載のコネクタ接続構造。
- 可動部は、コネクタ端子の一部を切り起こした板あるいは棒状部位であることを特徴とする請求項1記載のコネクタ接続構造。
- 可動部は、コネクタ端子に当接させて設けた板状のばねであることを特徴とする請求項1記載のコネクタ接続構造。
- 可動部は、コネクタ端子に当接させて設けた皿状のばねであることを特徴とする請求項1記載のコネクタ接続構造。
- 可動部は、コネクタ端子に当接させて設けたコイル状のばねであることを特徴とする請求項1記載のコネクタ接続構造。
- 可動部の一部に形成した接触部にエッジを設けたことを特徴とする請求項1記載のコネクタ接続構造。
- 可動部の一部に形成した接触部が、基板の電極面に押圧されるときに、前記錫メッキ面上で基板の面方向にずれることを特徴とする請求項1記載のコネクタ接続構造。
- 基板は、貫通孔を備え、
コネクタ端子は、前記基板の電極面に接する接触部と、前記貫通孔に挿入される挿入部とを備え、
前記挿入部には、前記貫通孔を貫通した部位を固定する抜け止め部を備えたことを特徴とする請求項1記載のコネクタ接続構造。 - 抜け止め部は、挿入部の貫通部位を基板側に折り曲げる折り曲げ部であることを特徴とする請求項9記載のコネクタ接続構造。
- 抜け止め部は、挿入部の端部に設けた、基板の貫通孔を貫通した部位を開いて係止する爪部であることを特徴とする請求項9記載のコネクタ接続構造。
- 抜け止め部は、挿入方向を軸とした回転方向に挿入部の貫通部位を回転して曲げたひねり部であることを特徴とする請求項9記載のコネクタ接続構造。
- 抜け止め部は、挿入部の貫通部位に装着する抜け止め用部材であることを特徴とする請求項9記載のコネクタ接続構造。
- 車載の電源を入力してヘッドランプ用光源の光源用電力を出力する点灯制御部を備え、
前記点灯制御部の前記電源の入力用接続部及び前記光源用電力の出力用接続部の少なくとも一方を、請求項1記載のコネクタ接続構造にて接続したことを特徴とする車載ヘッドランプ用光源の点灯装置。
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DE112009004576.6T DE112009004576B4 (de) | 2009-03-23 | 2009-12-17 | Verbinderverbindungsstruktur zum elektrischen Verbinden eines Verbinderanschlusses mit einer Elektrodenfläche einer Platte und Leuchteinrichtung damit |
US13/131,047 US8403684B2 (en) | 2009-03-23 | 2009-12-17 | Connector having a terminal with a tin plated contact pressed against a hot-dip tinned face of a board |
JP2011505684A JP5398822B2 (ja) | 2009-03-23 | 2009-12-17 | コネクタ接続構造及びこれを用いたヘッドランプ用光源の点灯装置 |
CN200980157866.0A CN102341967B (zh) | 2009-03-23 | 2009-12-17 | 连接器连接机构及使用该机构的前照灯用光源的点亮装置 |
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JP2009-070264 | 2009-03-23 |
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DE102009059008B4 (de) * | 2009-12-17 | 2015-04-16 | Phoenix Contact Gmbh & Co. Kg | Vorrichtung zur lösbaren Befestigung eines Stromleiters an einem Stromwandlergehäuse |
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DE102013220462A1 (de) * | 2013-10-10 | 2015-04-16 | Würth Elektronik Ics Gmbh & Co. Kg | Direktsteckschaltelement und Verbindungsanordnung mit einem Direktsteckschaltelement |
CN103521938B (zh) * | 2013-10-11 | 2015-12-23 | 重庆万力联兴实业(集团)有限公司 | 电动燃油泵电极插片与漆包线的焊接工艺 |
DE102013226933A1 (de) * | 2013-12-20 | 2015-06-25 | Continental Automotive Gmbh | Elektrisches Kontaktelement, Schaltungsanordnung und Verfahren zum Herstellen einer Schaltungsanordnung |
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DE102016216507B4 (de) * | 2016-09-01 | 2020-03-26 | Valeo Siemens Eautomotive Germany Gmbh | Schaltungsanordnung, insbesondere für ein elektrisch angetriebenes Kraftfahrzeug |
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DE112009004576B4 (de) | 2015-07-23 |
US8403684B2 (en) | 2013-03-26 |
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JP5398822B2 (ja) | 2014-01-29 |
CN102341967B (zh) | 2015-07-08 |
US20110235348A1 (en) | 2011-09-29 |
DE112009004576T5 (de) | 2012-09-06 |
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